[media] media: st-rc: Add ST remote control driver

This patch adds support to ST RC driver, which is basically a IR/UHF
receiver and transmitter. This IP (IRB) is common across all the ST
parts for settop box platforms. IRB is embedded in ST COMMS IP block.
It supports both Rx & Tx functionality.
This driver adds only Rx functionality via LIRC codec.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/media/st-rc.txt b/Documentation/devicetree/bindings/media/st-rc.txt
new file mode 100644
index 000000000000..05c432d08bca
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/st-rc.txt
@@ -0,0 +1,29 @@
+Device-Tree bindings for ST IRB IP
+
+Required properties:
+	- compatible: Should contain "st,comms-irb".
+	- reg: Base physical address of the controller and length of memory
+	  mapped region.
+	- interrupts: interrupt-specifier for the sole interrupt generated by
+	  the device. The interrupt specifier format depends on the interrupt
+	  controller parent.
+	- rx-mode: can be "infrared" or "uhf". This property specifies the L1
+	  protocol used for receiving remote control signals. rx-mode should
+	  be present iff the rx pins are wired up.
+	- tx-mode: should be "infrared". This property specifies the L1
+	  protocol used for transmitting remote control signals. tx-mode should
+	  be present iff the tx pins are wired up.
+
+Optional properties:
+	- pinctrl-names, pinctrl-0: the pincontrol settings to configure muxing
+	  properly for IRB pins.
+	- clocks : phandle with clock-specifier pair for IRB.
+
+Example node:
+
+	rc: rc@fe518000 {
+		compatible	= "st,comms-irb";
+		reg		= <0xfe518000 0x234>;
+		interrupts	= <0 203 0>;
+		rx-mode		= "infrared";
+	};